Mine-skip



D. F. LEPLEY.

, MINE SKIP. I APPLICATION FILED IAN. 17.1919.

1,304,784. I i Patented May 27, 1919.

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D. F. LEPLEY.

MINE SKIP.- APPLICATION FILED MN. 17.1919.

Patented May 27, 1919.

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D. F, LEPLEY.

MINE SKIP.

APPLICATION FILED JAN.17.1919.

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D. F. LEPLEY.

MINE SKIP. APPLICATION FILED JAN. 17.1919.

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D. F. LEPLEY.

MINE SKIP. APPLICATION FILED JAN. 17,1919.

1,304,784. Patented May 27, 1919.

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DANIEL F. LEPLEY, 0F CONNELLSVILLE, PENNSYLVANIA.

MINE-SKIP.

Specification of Letters l atent.

Patented May 27, 1919.

Application filed J 'anuary 17, 1919. Serial No. 271,661.

To all whom it may concern: I

Be it known that I, DANIEL F. LnPLEY, a citizen of the United States,residing at 'Connellsville, in the county of Fayette and State ofPennsylvania, have invented a new and useful Mine-Skip, of which thefollowing is a specification.

This invention relates to mine skips.

One of the objects of the invention is toprovide a skip that willdischarge its load out of the bottom thereof, and is non-tiltablyconnected to its upright hoist bail, thereby to avoid the manyobjectionable features of the ordinary overturning skip, withoutintroducing other new undesirable features.

Another object is to provide a skip hoist that is always balanced,whether loaded-or empty, and in which the empty skip at the deliveryposition will lose no portion of its weight as a counterbalance to theloaded skip at the bottom, thus avoiding the excessive unbalancedstarting load present where overturning skips are used;

A further object is to provide a skip having a combined gate and chutewhich will safely retain the contents of the skip while in transit, andwhich will discharge the same from the bottom of the skip into areceiving chute without danger of spilling any portion of the contentsof the skip into the shaft.

Another object is to provide a complete and positive mechanical controlof the chute or gate throughout the entire unloading cyole, both inopening and closing,so that no slamming nor injurious shocks to theoperating parts is possible. 7

- A further object is to provide mechanism of this character soconstructed and arranged that the opening of the combined gate and chuteis effected gradually and easily during the retarding or last stage ofthe hoist cycle, and the closing, of the same is efiected during theacceleration or first stage of the lowering cycle, thus to avoid allmanual operations and delays in discharging the load.

A still further object is to provide a skip that will adapt itself tothe handling of the maximumoutput with the minimum initial money outlayfor shaft and tipple structure, this being due'to the small size of theshaft and tipple portions necessary as compared with other forms ofskips of equal tonnage, it being unnecessary to provide special andexpensive means in the top of the tower to prevent overwinding of theempty skip, such provision being avoided because of the means employedto return the gate to normal or closed position when the hoisted skip ismoved above its discharge position.

With the foregoing and other objects in view, which will appear as thedescription proceeds, the invention consists of certain novel details ofconstruction and combinations of parts which will be hereinafter morefully described and pointed out in the claims,

it being understood that various changes may be made in the constructionand arrangement of the parts without departing from the spirit orsacrificing any of the advantages of the invention as set forth in theappended claims.

In the accompanying drawings the preferred form of the invention hasbeen shown.

In said drawings:

Figure 1 is a side elevation of the skip and showing the relativepositions of the parts when the skip is approaching its deliveringposition. r

Fig. 2 is a rear elevation of the structure shown in Fig. 1.

Fig. 3 is a section on line 33,Fig. 1.

Fig. i is an enlarged section through a portion of the top of the skipand through a portion of the chute at the bottom of the shaft, andshowing their relative positions during the loading of the skip.

Fig. 5 is a diagram showing the relative positions of the skip anddelivery chute at two points in the operation of the skip, the positionsof the parts while the skip is ascending or descending being shown byfull lines and, While delivering, by dotted lines.

Fig. 6 is a diagram illustrating the relative movement of the parts tobring delivery spout to delivering position.

Referring to the figures by characters of reference, 1 designates thecontainer or body portion of the skip mounted in a frame 2 the sides ofwhich are adapted to engage the guide rails in the mine shaft and whichframe can be of any desiredconstruction. A portion of the hoistingrigging connected to the upper portion of the frame 2 has been shown at3, and neither the frame nor the hoisting structure constitutes, initself, any part of the present invention.

The bottom of the body 1 is inclined'and its lower end forms the bottomwall of the outlet opening t in one wall of the body. This bottom 5 isreinforced by transverse angle strips 5 ,and extends between segmentalwings 6 provided at the sides of a combined gate and discharge chute 7which is hingedly connected at its center to the lower end of the bottom5, as shown at 8. An angular extension. 9 is provided on the frame 2 andunder the bottom 5 and Qurnaled on this extension is a transverse shaft10 to the ends the parts are thus positioned the points-l2" where thebell cranks are connected to the links 12, are slightly below the planeoccupied by the axis of shaft 10 and the points 6. Thus the gate andchute 7 is locked 1n position so as to close the opening. 4 while theskip is traveling within the mlneshaft.

A delivery chute 16 is mounted with its upper end close to the shaft inwhich the skip is arranged to travel and'supportedat the sides of thepath of the skip and near the chute 16 are tripping rails 17 adapted tobe engaged by and to shift therollers or wheels 14. The rails areconstructedin any manner desired so as to provide channelsin which thewheels can travel and each rail begins at a. point below the level ofthe top of the chute, where a wheel 14 can enter the channel readilyduring the upward movement of the skip, the sides of the channel, at thelower end, being. preferably flared slightly, as shown at 18, to preventthe wheels from pounding against the rails should they be slightly outofline-from any cause. From its lower endeachrail follows a curve such asdisclosed in diagram at 17 in' Fig. 6 and extending; to a point abovethe chute l6. As the wheels 14: move successively to the differentpositions numbered from 1 to 36 along the curved rail 17 in Fig. 6 thehinge 8'movesto the different po sitions indicated by the right handcolumn of figures at the left of Fig. 6, and the upper end :of the gateor chute '7 moves successively to the positions indicated by the seriesof numerals at the left of Fig. 6. This-tilting of the gate or chute 7 iis obviously controlled by the speed of movement of the skip and whenthe chute 7 reaches the chute 16, the bell cranks 11 are tilted at theproper'time and speed to lift the connections'l2' to unlock the gate orchute 7 and to swing it so that it comes to delivering positionand thenswings upwardly to closed position should the skip move too far abovethe delivery chute 16, due to overwinding.

It will be noted that theoperation of the combined gate and chute 7 isgradual and free of all pounding such as would be caused should one partbe compelled to strike directly against another part and which poundingwould soon: produce breakage of some of the parts. It will also be notedthat should the delivery chute 7 be raised too high, it will not becomereleased and hang down within the mine shaft, but will be moved toclosed or partly closed position so that the contents of the skip willnot be wasted by spilling down the shaft The bell cranks 11 and thelinks 12 form toggles and cooperate to lock the discharge spout or gate7 in-closed-positionwhenat points below the chute 16, thus preventingsaidchute 7 from swinging, to a position upside down while.

in transit within the shaft.

In Fig. 4 has been shown a portion of a loading chute l9-having avertically sliding gate 20- provided with a flange 21. Thus when theskip-is brought to position at the bottom of the shaft the. flange 22 atthe top of the skip willstrike and depress the flange :21 on the gate 20and open the gate by moving itdownwardly relative to the chute 19. Thusmaterial will gravitate from the chute to the skip as will be obvious.

What is claimed is 1. In a mine-skip-the combination with a containerhaving an: opening in one walland a bottoms inclined downwardly to thebottom of theiopening, of a combined gate and chute hinged between itsends at the bottom of the opening and having. side wings, atogglemovable with the. container and connected to'the gate forfastening the gate in "closed position, and stationary means forshiftingthe toggle toopen'the gate during the upward movement of thecontainer.

2. In a mineskip the combination with a container having an. outletopening, and a combined gateand chute normally closing the opening,-of:atoggle movable with the container. and connected to-the gate,means forsupportingthemiddle-jointof thetoggle past the dead: center to'fasten'thegate: in closed position, an arm'extendingfrom the toggle, andstationary means in the path of: thearm: for shifting.- thetoggleduring. the movement of: the container, to i open the gate.

3. In av mine skip the combination with a containen having. an outletopening, and a combined gate and chute. normally closing the Opening,ofa toggle movable with the container andxconnected'to the gate, a stop,said toggle normally resting againsti the stop with its" intermediatejoint below the" dead center, thereby to* fasten: the gate in closedposition while in transit, and fixed means for shifting. the toggleduring the movement of the container to unfastenand open the gate.

4; In amine skip the combination with a container having. anoutletopening and a combined gate and chutenormally closing the opening,of a toggle movable with the container and connected to the gate, meansfor supporting the intermediate joint of the toggle past the dead centerto fasten the gate in closed position, a stationary delivery chute nearthe path of the container, and

stationary means cooperating with the tog' gle and controlled by thespeed of movement of the container for unlocking the gate, and forswinging the gate to delivering position Within and above the deliverychute and to closed position, during the upward and downward movement,respectively, of the container.

5. In a mine skip the combination with a container having an outletopening and a combined gate and chute normally closing the opening, of adelivery chute fixedly mounted near the path of the container, andcooperating movable and fixed means on the container and adjacent thepath of the container, respectively, for opening and closing the gate ata speed and to a degree depend ent upon the speed and distance ofmovement of the skip.

6. In a mine skip the combination with a container having an outlet inone wall and an inclined 'bottom extending downwardly to the bottom ofthe outlet, of levers movable with thecontainer, a combined gate andchute hinged to the bottom of the out let, links connecting the leversand gate and forming toggles, the intermediate ]0iI1tS of the togglesbeing normally supported below let, a toggle connected to the combinedgate a and chute and having its intermediate joint normally below thedead center to fasten the gate in closed position while the container isin transit, a delivery chute, a wheel con nected to one of the membersof the toggle, and means in the path of the wheel for shifting thetoggle to unlock'and swing the gate to delivering position within thedelivery chute during the upward movement of the container and forreturning the gate to normal or closed position when the container ismoved upwardly above its discharge position.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signa-, ture in the presence of two witnesses.

DANIEL F. LEPLEY.

Witnesses:

W. H. SOISSON, B. C. BURKHARDT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, J). G.

